2- If you are using an MBA to switch functions, then even a lower tier school will help you do that (but obviously not as valuable as a higher tier school)
"Traditional employee" here just means someone working for an employer - not self employed or starting their own company. It does not mean "an average employee". Clearly a random person off the street is not going to make $1MM/year anytime soon. And anyone who claims they could make that happen are lying.
Also: I would hope much of the advice is helpful for anyone who wants to "accelerate" their career, even if they don't take it all the way to $1MM.